Performance analysis of urban light electric vehicle propulsion system's multi-level modelling

The goal of the present paper is to underline benefits and drawbacks when using different simulation approaches for permanent magnet synchronous machines in the field of electric vehicle propulsion. Three different simulation philosophies are detailed, all based on the analytical DQ representation of the machine. The first model is the generic one, which considers all the machine electrical and mechanical parameters constant through all the operational regimes. The other two approaches are based on considering cross saturation and the variation of the DQ inductances versus the variation of the DQ currents. Both are designed with use of data fetched from the considered PMSM's finite element analysis (FEA) model. The first one, that considers the cross saturation influence, is created with data recorded from the FEA model using the frozen permeability philosophy. The second one, which considers inductance variation and cross saturation uses 3D flux linkage look-up-tables for both the D and Q axis machine fluxes. Building the models as well as testing them simulations and experiments wise is presented in detail in the paper. Important conclusions are highlighted guiding the readers when choosing their future approaches in the study of electric vehicle propulsion motors.